ABAP Select data from SAP table V_T7TW0P into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T7TW0P table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to V_T7TW0P. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the V_T7TW0P table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_V_T7TW0P TYPE STANDARD TABLE OF V_T7TW0P,
      WA_V_T7TW0P TYPE V_T7TW0P,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <V_T7TW0P> TYPE V_T7TW0P.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T7TW0P.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T7TW0P
  INTO TABLE IT_V_T7TW0P.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T7TW0P
*  INTO TABLE @DATA(IT_V_T7TW0P2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_V_T7TW0P INDEX 1 INTO DATA(WA_V_T7TW0P2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T7TW0P ASSIGNING <V_T7TW0P>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T7TW0P>-MANDT = 1.
<V_T7TW0P>-WERKS = 1.
<V_T7TW0P>-BTRTL = 1.
<V_T7TW0P>-NAME1 = 1.
<V_T7TW0P>-BTEXT = 1.

ENDLOOP.

LOOP AT IT_V_T7TW0P INTO WA_V_T7TW0P.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T7TW0P-LSLFG, sy-vline,
  WA_V_T7TW0P-ENTID, sy-vline,
  WA_V_T7TW0P-ENTER, sy-vline,
  WA_V_T7TW0P-ENTXI, sy-vline,
  WA_V_T7TW0P-ENTAU, sy-vline,
  WA_V_T7TW0P-ENTXM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T7TW0P you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_V_T7TW0P TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_V_T7TW0P INTO WA_V_T7TW0P.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_V_T7TW0P_STR, 
MANDT TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
NAME1 TYPE STRING,
BTEXT TYPE STRING,
LSLFG TYPE STRING,
ENTID TYPE STRING,
ENTER TYPE STRING,
ENTXI TYPE STRING,
ENTAU TYPE STRING,
ENTXM TYPE STRING,
ENTBD TYPE STRING,
TAXCA TYPE STRING,
ESFCA TYPE STRING,
BRCOD TYPE STRING,
LIAUT TYPE STRING,
LIID TYPE STRING,
NHCAT TYPE STRING,
NHGRP TYPE STRING,
NHIAU TYPE STRING,
NHIID TYPE STRING,
GIID TYPE STRING,
EWCID TYPE STRING,
EWCER TYPE STRING,
EWCXI TYPE STRING,
EWCAU TYPE STRING,
EWCXM TYPE STRING,
EWCBD TYPE STRING,
TWHDR TYPE STRING,
EWCHD TYPE STRING,
MOLGA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T7TW0P_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_V_T7TW0P_STR-MANDT sy-vline 
WA_V_T7TW0P_STR-WERKS sy-vline 
WA_V_T7TW0P_STR-BTRTL sy-vline 
WA_V_T7TW0P_STR-NAME1 sy-vline 
WA_V_T7TW0P_STR-BTEXT sy-vline 
WA_V_T7TW0P_STR-LSLFG sy-vline 
WA_V_T7TW0P_STR-ENTID sy-vline 
WA_V_T7TW0P_STR-ENTER sy-vline 
WA_V_T7TW0P_STR-ENTXI sy-vline 
WA_V_T7TW0P_STR-ENTAU sy-vline 
WA_V_T7TW0P_STR-ENTXM sy-vline 
WA_V_T7TW0P_STR-ENTBD sy-vline 
WA_V_T7TW0P_STR-TAXCA sy-vline 
WA_V_T7TW0P_STR-ESFCA sy-vline 
WA_V_T7TW0P_STR-BRCOD sy-vline 
WA_V_T7TW0P_STR-LIAUT sy-vline 
WA_V_T7TW0P_STR-LIID sy-vline 
WA_V_T7TW0P_STR-NHCAT sy-vline 
WA_V_T7TW0P_STR-NHGRP sy-vline 
WA_V_T7TW0P_STR-NHIAU sy-vline 
WA_V_T7TW0P_STR-NHIID sy-vline 
WA_V_T7TW0P_STR-GIID sy-vline 
WA_V_T7TW0P_STR-EWCID sy-vline 
WA_V_T7TW0P_STR-EWCER sy-vline 
WA_V_T7TW0P_STR-EWCXI sy-vline 
WA_V_T7TW0P_STR-EWCAU sy-vline 
WA_V_T7TW0P_STR-EWCXM sy-vline 
WA_V_T7TW0P_STR-EWCBD sy-vline 
WA_V_T7TW0P_STR-TWHDR sy-vline 
WA_V_T7TW0P_STR-EWCHD sy-vline 
WA_V_T7TW0P_STR-MOLGA sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.